1 /* $NetBSD: cd9660_eltorito.c,v 1.23 2018/03/28 06:48:55 nonaka Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause-NetBSD 5 * 6 * Copyright (c) 2005 Daniel Watt, Walter Deignan, Ryan Gabrys, Alan 7 * Perez-Rathke and Ram Vedam. All rights reserved. 8 * 9 * This code was written by Daniel Watt, Walter Deignan, Ryan Gabrys, 10 * Alan Perez-Rathke and Ram Vedam. 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above 18 * copyright notice, this list of conditions and the following 19 * disclaimer in the documentation and/or other materials provided 20 * with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY DANIEL WATT, WALTER DEIGNAN, RYAN 23 * GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 26 * DISCLAIMED. IN NO EVENT SHALL DANIEL WATT, WALTER DEIGNAN, RYAN 27 * GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 30 * USE,DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 31 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 34 * OF SUCH DAMAGE. 35 */ 36 37 #include "cd9660.h" 38 #include "cd9660_eltorito.h" 39 #include <util.h> 40 41 #include <sys/cdefs.h> 42 __FBSDID("$FreeBSD$"); 43 44 /* 45 * Partition Status Information from Apple Tech Note 1189 46 */ 47 #define APPLE_PS_VALID 0x00000001 /* Entry is valid */ 48 #define APPLE_PS_ALLOCATED 0x00000002 /* Entry is allocated */ 49 #define APPLE_PS_READABLE 0x00000010 /* Entry is readable */ 50 #define APPLE_PS_WRITABLE 0x00000020 /* Entry is writable */ 51 52 #ifdef DEBUG 53 #define ELTORITO_DPRINTF(__x) printf __x 54 #else 55 #define ELTORITO_DPRINTF(__x) 56 #endif 57 58 #include <util.h> 59 60 static struct boot_catalog_entry *cd9660_init_boot_catalog_entry(void); 61 static struct boot_catalog_entry *cd9660_boot_setup_validation_entry(char); 62 static struct boot_catalog_entry *cd9660_boot_setup_default_entry( 63 struct cd9660_boot_image *); 64 static struct boot_catalog_entry *cd9660_boot_setup_section_head(char); 65 #if 0 66 static u_char cd9660_boot_get_system_type(struct cd9660_boot_image *); 67 #endif 68 69 static struct cd9660_boot_image *default_boot_image; 70 71 int 72 cd9660_add_boot_disk(iso9660_disk *diskStructure, const char *boot_info) 73 { 74 struct stat stbuf; 75 const char *mode_msg; 76 char *temp; 77 char *sysname; 78 char *filename; 79 struct cd9660_boot_image *new_image, *tmp_image; 80 81 assert(boot_info != NULL); 82 83 if (*boot_info == '\0') { 84 warnx("Error: Boot disk information must be in the " 85 "format 'system;filename'"); 86 return 0; 87 } 88 89 /* First decode the boot information */ 90 temp = estrdup(boot_info); 91 92 sysname = temp; 93 filename = strchr(sysname, ';'); 94 if (filename == NULL) { 95 warnx("supply boot disk information in the format " 96 "'system;filename'"); 97 free(temp); 98 return 0; 99 } 100 101 *filename++ = '\0'; 102 103 if (diskStructure->verbose_level > 0) { 104 printf("Found bootdisk with system %s, and filename %s\n", 105 sysname, filename); 106 } 107 new_image = ecalloc(1, sizeof(*new_image)); 108 new_image->loadSegment = 0; /* default for now */ 109 110 /* Decode System */ 111 if (strcmp(sysname, "i386") == 0) 112 new_image->system = ET_SYS_X86; 113 else if (strcmp(sysname, "powerpc") == 0) 114 new_image->system = ET_SYS_PPC; 115 else if (strcmp(sysname, "macppc") == 0 || 116 strcmp(sysname, "mac68k") == 0) 117 new_image->system = ET_SYS_MAC; 118 else if (strcmp(sysname, "efi") == 0) 119 new_image->system = ET_SYS_EFI; 120 else { 121 warnx("boot disk system must be " 122 "i386, powerpc, macppc, mac68k, or efi"); 123 free(temp); 124 free(new_image); 125 return 0; 126 } 127 128 129 new_image->filename = estrdup(filename); 130 131 free(temp); 132 133 /* Get information about the file */ 134 if (lstat(new_image->filename, &stbuf) == -1) 135 err(EXIT_FAILURE, "%s: lstat(\"%s\")", __func__, 136 new_image->filename); 137 138 switch (stbuf.st_size) { 139 case 1440 * 1024: 140 new_image->targetMode = ET_MEDIA_144FDD; 141 mode_msg = "Assigned boot image to 1.44 emulation mode"; 142 break; 143 case 1200 * 1024: 144 new_image->targetMode = ET_MEDIA_12FDD; 145 mode_msg = "Assigned boot image to 1.2 emulation mode"; 146 break; 147 case 2880 * 1024: 148 new_image->targetMode = ET_MEDIA_288FDD; 149 mode_msg = "Assigned boot image to 2.88 emulation mode"; 150 break; 151 default: 152 new_image->targetMode = ET_MEDIA_NOEM; 153 mode_msg = "Assigned boot image to no emulation mode"; 154 break; 155 } 156 157 if (diskStructure->verbose_level > 0) 158 printf("%s\n", mode_msg); 159 160 new_image->size = stbuf.st_size; 161 new_image->num_sectors = 162 howmany(new_image->size, diskStructure->sectorSize) * 163 howmany(diskStructure->sectorSize, 512); 164 if (diskStructure->verbose_level > 0) { 165 printf("New image has size %d, uses %d 512-byte sectors\n", 166 new_image->size, new_image->num_sectors); 167 } 168 new_image->sector = -1; 169 /* Bootable by default */ 170 new_image->bootable = ET_BOOTABLE; 171 /* Add boot disk */ 172 173 /* Group images for the same platform together. */ 174 TAILQ_FOREACH(tmp_image, &diskStructure->boot_images, image_list) { 175 if (tmp_image->system != new_image->system) 176 break; 177 } 178 179 if (tmp_image == NULL) { 180 TAILQ_INSERT_HEAD(&diskStructure->boot_images, new_image, 181 image_list); 182 } else 183 TAILQ_INSERT_BEFORE(tmp_image, new_image, image_list); 184 185 new_image->serialno = diskStructure->image_serialno++; 186 187 new_image->platform_id = new_image->system; 188 189 /* TODO : Need to do anything about the boot image in the tree? */ 190 diskStructure->is_bootable = 1; 191 192 /* First boot image is initial/default entry. */ 193 if (default_boot_image == NULL) 194 default_boot_image = new_image; 195 196 return 1; 197 } 198 199 int 200 cd9660_eltorito_add_boot_option(iso9660_disk *diskStructure, 201 const char *option_string, const char *value) 202 { 203 char *eptr; 204 struct cd9660_boot_image *image; 205 206 assert(option_string != NULL); 207 208 /* Find the last image added */ 209 TAILQ_FOREACH(image, &diskStructure->boot_images, image_list) { 210 if (image->serialno + 1 == diskStructure->image_serialno) 211 break; 212 } 213 if (image == NULL) 214 errx(EXIT_FAILURE, "Attempted to add boot option, " 215 "but no boot images have been specified"); 216 217 if (strcmp(option_string, "no-emul-boot") == 0) { 218 image->targetMode = ET_MEDIA_NOEM; 219 } else if (strcmp(option_string, "no-boot") == 0) { 220 image->bootable = ET_NOT_BOOTABLE; 221 } else if (strcmp(option_string, "hard-disk-boot") == 0) { 222 image->targetMode = ET_MEDIA_HDD; 223 } else if (strcmp(option_string, "boot-load-segment") == 0) { 224 image->loadSegment = strtoul(value, &eptr, 16); 225 if (eptr == value || *eptr != '\0' || errno != ERANGE) { 226 warn("%s: strtoul", __func__); 227 return 0; 228 } 229 } else if (strcmp(option_string, "platformid") == 0) { 230 if (strcmp(value, "efi") == 0) 231 image->platform_id = ET_SYS_EFI; 232 else { 233 warn("%s: unknown platform: %s", __func__, value); 234 return 0; 235 } 236 } else { 237 return 0; 238 } 239 return 1; 240 } 241 242 static struct boot_catalog_entry * 243 cd9660_init_boot_catalog_entry(void) 244 { 245 return ecalloc(1, sizeof(struct boot_catalog_entry)); 246 } 247 248 static struct boot_catalog_entry * 249 cd9660_boot_setup_validation_entry(char sys) 250 { 251 struct boot_catalog_entry *entry; 252 boot_catalog_validation_entry *ve; 253 int16_t checksum; 254 unsigned char *csptr; 255 size_t i; 256 entry = cd9660_init_boot_catalog_entry(); 257 258 entry->entry_type = ET_ENTRY_VE; 259 ve = &entry->entry_data.VE; 260 261 ve->header_id[0] = 1; 262 ve->platform_id[0] = sys; 263 ve->key[0] = 0x55; 264 ve->key[1] = 0xAA; 265 266 /* Calculate checksum */ 267 checksum = 0; 268 cd9660_721(0, ve->checksum); 269 csptr = (unsigned char*)ve; 270 for (i = 0; i < sizeof(*ve); i += 2) { 271 checksum += (int16_t)csptr[i]; 272 checksum += 256 * (int16_t)csptr[i + 1]; 273 } 274 checksum = -checksum; 275 cd9660_721(checksum, ve->checksum); 276 277 ELTORITO_DPRINTF(("%s: header_id %d, platform_id %d, key[0] %d, key[1] %d, " 278 "checksum %04x\n", __func__, ve->header_id[0], ve->platform_id[0], 279 ve->key[0], ve->key[1], checksum)); 280 return entry; 281 } 282 283 static struct boot_catalog_entry * 284 cd9660_boot_setup_default_entry(struct cd9660_boot_image *disk) 285 { 286 struct boot_catalog_entry *default_entry; 287 boot_catalog_initial_entry *ie; 288 289 default_entry = cd9660_init_boot_catalog_entry(); 290 if (default_entry == NULL) 291 return NULL; 292 293 default_entry->entry_type = ET_ENTRY_IE; 294 ie = &default_entry->entry_data.IE; 295 296 ie->boot_indicator[0] = disk->bootable; 297 ie->media_type[0] = disk->targetMode; 298 cd9660_721(disk->loadSegment, ie->load_segment); 299 ie->system_type[0] = disk->system; 300 cd9660_721(disk->num_sectors, ie->sector_count); 301 cd9660_731(disk->sector, ie->load_rba); 302 303 ELTORITO_DPRINTF(("%s: boot indicator %d, media type %d, " 304 "load segment %04x, system type %d, sector count %d, " 305 "load rba %d\n", __func__, ie->boot_indicator[0], 306 ie->media_type[0], disk->loadSegment, ie->system_type[0], 307 disk->num_sectors, disk->sector)); 308 return default_entry; 309 } 310 311 static struct boot_catalog_entry * 312 cd9660_boot_setup_section_head(char platform) 313 { 314 struct boot_catalog_entry *entry; 315 boot_catalog_section_header *sh; 316 317 entry = cd9660_init_boot_catalog_entry(); 318 if (entry == NULL) 319 return NULL; 320 321 entry->entry_type = ET_ENTRY_SH; 322 sh = &entry->entry_data.SH; 323 /* 324 * More by default. 325 * The last one will manually be set to ET_SECTION_HEADER_LAST 326 */ 327 sh->header_indicator[0] = ET_SECTION_HEADER_MORE; 328 sh->platform_id[0] = platform; 329 sh->num_section_entries[0] = 0; 330 return entry; 331 } 332 333 static struct boot_catalog_entry * 334 cd9660_boot_setup_section_entry(struct cd9660_boot_image *disk) 335 { 336 struct boot_catalog_entry *entry; 337 boot_catalog_section_entry *se; 338 if ((entry = cd9660_init_boot_catalog_entry()) == NULL) 339 return NULL; 340 341 entry->entry_type = ET_ENTRY_SE; 342 se = &entry->entry_data.SE; 343 344 se->boot_indicator[0] = ET_BOOTABLE; 345 se->media_type[0] = disk->targetMode; 346 cd9660_721(disk->loadSegment, se->load_segment); 347 cd9660_721(disk->num_sectors, se->sector_count); 348 cd9660_731(disk->sector, se->load_rba); 349 return entry; 350 } 351 352 #if 0 353 static u_char 354 cd9660_boot_get_system_type(struct cd9660_boot_image *disk) 355 { 356 /* 357 For hard drive booting, we need to examine the MBR to figure 358 out what the partition type is 359 */ 360 return 0; 361 } 362 #endif 363 364 /* 365 * Set up the BVD, Boot catalog, and the boot entries, but do no writing 366 */ 367 int 368 cd9660_setup_boot(iso9660_disk *diskStructure, int first_sector) 369 { 370 int sector; 371 int used_sectors; 372 int num_entries = 0; 373 int catalog_sectors; 374 struct boot_catalog_entry *x86_head, *mac_head, *ppc_head, *efi_head, 375 *valid_entry, *default_entry, *temp, *head, **headp, *next; 376 struct cd9660_boot_image *tmp_disk; 377 378 headp = NULL; 379 x86_head = mac_head = ppc_head = efi_head = NULL; 380 381 /* If there are no boot disks, don't bother building boot information */ 382 if (TAILQ_EMPTY(&diskStructure->boot_images)) 383 return 0; 384 385 /* Point to catalog: For now assume it consumes one sector */ 386 ELTORITO_DPRINTF(("Boot catalog will go in sector %d\n", first_sector)); 387 diskStructure->boot_catalog_sector = first_sector; 388 cd9660_731(first_sector, 389 diskStructure->boot_descriptor->boot_catalog_pointer); 390 391 /* Step 1: Generate boot catalog */ 392 /* Step 1a: Validation entry */ 393 valid_entry = cd9660_boot_setup_validation_entry(ET_SYS_X86); 394 if (valid_entry == NULL) 395 return -1; 396 397 /* 398 * Count how many boot images there are, 399 * and how many sectors they consume. 400 */ 401 num_entries = 1; 402 used_sectors = 0; 403 404 TAILQ_FOREACH(tmp_disk, &diskStructure->boot_images, image_list) { 405 used_sectors += tmp_disk->num_sectors; 406 407 /* One default entry per image */ 408 num_entries++; 409 } 410 catalog_sectors = howmany(num_entries * 0x20, diskStructure->sectorSize); 411 used_sectors += catalog_sectors; 412 413 if (diskStructure->verbose_level > 0) { 414 printf("%s: there will be %i entries consuming %i sectors. " 415 "Catalog is %i sectors\n", __func__, num_entries, 416 used_sectors, catalog_sectors); 417 } 418 419 /* Populate sector numbers */ 420 sector = first_sector + catalog_sectors; 421 TAILQ_FOREACH(tmp_disk, &diskStructure->boot_images, image_list) { 422 tmp_disk->sector = sector; 423 sector += tmp_disk->num_sectors / 424 (diskStructure->sectorSize / 512); 425 } 426 427 LIST_INSERT_HEAD(&diskStructure->boot_entries, valid_entry, ll_struct); 428 429 /* Step 1b: Initial/default entry */ 430 /* TODO : PARAM */ 431 if (default_boot_image != NULL) { 432 struct cd9660_boot_image *tcbi; 433 TAILQ_FOREACH(tcbi, &diskStructure->boot_images, image_list) { 434 if (tcbi == default_boot_image) { 435 tmp_disk = tcbi; 436 break; 437 } 438 } 439 } 440 if (tmp_disk == NULL) 441 tmp_disk = TAILQ_FIRST(&diskStructure->boot_images); 442 default_entry = cd9660_boot_setup_default_entry(tmp_disk); 443 if (default_entry == NULL) { 444 warnx("Error: memory allocation failed in cd9660_setup_boot"); 445 return -1; 446 } 447 448 LIST_INSERT_AFTER(valid_entry, default_entry, ll_struct); 449 450 /* Todo: multiple default entries? */ 451 452 tmp_disk = TAILQ_FIRST(&diskStructure->boot_images); 453 454 head = NULL; 455 temp = default_entry; 456 457 /* If multiple boot images are given : */ 458 for (; tmp_disk != NULL; tmp_disk = TAILQ_NEXT(tmp_disk, image_list)) { 459 if (tmp_disk == default_boot_image) 460 continue; 461 462 /* Step 2: Section header */ 463 switch (tmp_disk->platform_id) { 464 case ET_SYS_X86: 465 headp = &x86_head; 466 break; 467 case ET_SYS_PPC: 468 headp = &ppc_head; 469 break; 470 case ET_SYS_MAC: 471 headp = &mac_head; 472 break; 473 case ET_SYS_EFI: 474 headp = &efi_head; 475 break; 476 default: 477 warnx("%s: internal error: unknown system type", 478 __func__); 479 return -1; 480 } 481 482 if (*headp == NULL) { 483 head = 484 cd9660_boot_setup_section_head(tmp_disk->platform_id); 485 if (head == NULL) { 486 warnx("Error: memory allocation failed in " 487 "cd9660_setup_boot"); 488 return -1; 489 } 490 LIST_INSERT_AFTER(default_entry, head, ll_struct); 491 *headp = head; 492 } else 493 head = *headp; 494 495 head->entry_data.SH.num_section_entries[0]++; 496 497 /* Step 2a: Section entry and extensions */ 498 temp = cd9660_boot_setup_section_entry(tmp_disk); 499 if (temp == NULL) { 500 warn("%s: cd9660_boot_setup_section_entry", __func__); 501 return -1; 502 } 503 504 while ((next = LIST_NEXT(head, ll_struct)) != NULL && 505 next->entry_type == ET_ENTRY_SE) 506 head = next; 507 508 LIST_INSERT_AFTER(head, temp, ll_struct); 509 } 510 511 /* Find the last Section Header entry and mark it as the last. */ 512 head = NULL; 513 LIST_FOREACH(next, &diskStructure->boot_entries, ll_struct) { 514 if (next->entry_type == ET_ENTRY_SH) 515 head = next; 516 } 517 if (head != NULL) 518 head->entry_data.SH.header_indicator[0] = ET_SECTION_HEADER_LAST; 519 520 /* TODO: Remaining boot disks when implemented */ 521 522 return first_sector + used_sectors; 523 } 524 525 int 526 cd9660_setup_boot_volume_descriptor(iso9660_disk *diskStructure, 527 volume_descriptor *bvd) 528 { 529 boot_volume_descriptor *bvdData = 530 (boot_volume_descriptor*)bvd->volumeDescriptorData; 531 532 bvdData->boot_record_indicator[0] = ISO_VOLUME_DESCRIPTOR_BOOT; 533 memcpy(bvdData->identifier, ISO_VOLUME_DESCRIPTOR_STANDARD_ID, 5); 534 bvdData->version[0] = 1; 535 memcpy(bvdData->boot_system_identifier, ET_ID, 23); 536 memcpy(bvdData->identifier, ISO_VOLUME_DESCRIPTOR_STANDARD_ID, 5); 537 diskStructure->boot_descriptor = 538 (boot_volume_descriptor*) bvd->volumeDescriptorData; 539 return 1; 540 } 541 542 static int 543 cd9660_write_mbr_partition_entry(FILE *fd, int idx, off_t sector_start, 544 off_t nsectors, int type) 545 { 546 uint8_t val; 547 uint32_t lba; 548 549 if (fseeko(fd, (off_t)(idx) * 16 + 0x1be, SEEK_SET) == -1) 550 err(1, "fseeko"); 551 552 val = 0x80; /* Bootable */ 553 fwrite(&val, sizeof(val), 1, fd); 554 555 val = 0xff; /* CHS begin */ 556 fwrite(&val, sizeof(val), 1, fd); 557 fwrite(&val, sizeof(val), 1, fd); 558 fwrite(&val, sizeof(val), 1, fd); 559 560 val = type; /* Part type */ 561 fwrite(&val, sizeof(val), 1, fd); 562 563 val = 0xff; /* CHS end */ 564 fwrite(&val, sizeof(val), 1, fd); 565 fwrite(&val, sizeof(val), 1, fd); 566 fwrite(&val, sizeof(val), 1, fd); 567 568 /* LBA extent */ 569 lba = htole32(sector_start); 570 fwrite(&lba, sizeof(lba), 1, fd); 571 lba = htole32(nsectors); 572 fwrite(&lba, sizeof(lba), 1, fd); 573 574 return 0; 575 } 576 577 static int 578 cd9660_write_apm_partition_entry(FILE *fd, int idx, int total_partitions, 579 off_t sector_start, off_t nsectors, off_t sector_size, 580 const char *part_name, const char *part_type) 581 { 582 uint32_t apm32, part_status; 583 uint16_t apm16; 584 585 part_status = APPLE_PS_VALID | APPLE_PS_ALLOCATED | APPLE_PS_READABLE | 586 APPLE_PS_WRITABLE; 587 588 if (fseeko(fd, (off_t)(idx + 1) * sector_size, SEEK_SET) == -1) 589 err(1, "fseeko"); 590 591 /* Signature */ 592 apm16 = htobe16(0x504d); 593 fwrite(&apm16, sizeof(apm16), 1, fd); 594 apm16 = 0; 595 fwrite(&apm16, sizeof(apm16), 1, fd); 596 597 /* Total number of partitions */ 598 apm32 = htobe32(total_partitions); 599 fwrite(&apm32, sizeof(apm32), 1, fd); 600 /* Bounds */ 601 apm32 = htobe32(sector_start); 602 fwrite(&apm32, sizeof(apm32), 1, fd); 603 apm32 = htobe32(nsectors); 604 fwrite(&apm32, sizeof(apm32), 1, fd); 605 606 fwrite(part_name, strlen(part_name) + 1, 1, fd); 607 fseek(fd, 32 - strlen(part_name) - 1, SEEK_CUR); 608 fwrite(part_type, strlen(part_type) + 1, 1, fd); 609 fseek(fd, 32 - strlen(part_type) - 1, SEEK_CUR); 610 611 apm32 = 0; 612 /* pmLgDataStart */ 613 fwrite(&apm32, sizeof(apm32), 1, fd); 614 /* pmDataCnt */ 615 apm32 = htobe32(nsectors); 616 fwrite(&apm32, sizeof(apm32), 1, fd); 617 /* pmPartStatus */ 618 apm32 = htobe32(part_status); 619 fwrite(&apm32, sizeof(apm32), 1, fd); 620 621 return 0; 622 } 623 624 int 625 cd9660_write_boot(iso9660_disk *diskStructure, FILE *fd) 626 { 627 struct boot_catalog_entry *e; 628 struct cd9660_boot_image *t; 629 int apm_partitions = 0; 630 int mbr_partitions = 0; 631 632 /* write boot catalog */ 633 if (fseeko(fd, (off_t)diskStructure->boot_catalog_sector * 634 diskStructure->sectorSize, SEEK_SET) == -1) 635 err(1, "fseeko"); 636 637 if (diskStructure->verbose_level > 0) { 638 printf("Writing boot catalog to sector %" PRId64 "\n", 639 diskStructure->boot_catalog_sector); 640 } 641 LIST_FOREACH(e, &diskStructure->boot_entries, ll_struct) { 642 if (diskStructure->verbose_level > 0) { 643 printf("Writing catalog entry of type %d\n", 644 e->entry_type); 645 } 646 /* 647 * It doesn't matter which one gets written 648 * since they are the same size 649 */ 650 fwrite(&(e->entry_data.VE), 1, 32, fd); 651 } 652 if (diskStructure->verbose_level > 0) 653 printf("Finished writing boot catalog\n"); 654 655 /* copy boot images */ 656 TAILQ_FOREACH(t, &diskStructure->boot_images, image_list) { 657 if (diskStructure->verbose_level > 0) { 658 printf("Writing boot image from %s to sectors %d\n", 659 t->filename, t->sector); 660 } 661 cd9660_copy_file(diskStructure, fd, t->sector, t->filename); 662 663 if (t->system == ET_SYS_MAC) 664 apm_partitions++; 665 if (t->system == ET_SYS_PPC) 666 mbr_partitions++; 667 } 668 669 /* some systems need partition tables as well */ 670 if (mbr_partitions > 0 || diskStructure->chrp_boot) { 671 uint16_t sig; 672 673 fseek(fd, 0x1fe, SEEK_SET); 674 sig = htole16(0xaa55); 675 fwrite(&sig, sizeof(sig), 1, fd); 676 677 mbr_partitions = 0; 678 679 /* Write ISO9660 descriptor, enclosing the whole disk */ 680 if (diskStructure->chrp_boot) 681 cd9660_write_mbr_partition_entry(fd, mbr_partitions++, 682 0, diskStructure->totalSectors * 683 (diskStructure->sectorSize / 512), 0x96); 684 685 /* Write all partition entries */ 686 TAILQ_FOREACH(t, &diskStructure->boot_images, image_list) { 687 if (t->system != ET_SYS_PPC) 688 continue; 689 cd9660_write_mbr_partition_entry(fd, mbr_partitions++, 690 t->sector * (diskStructure->sectorSize / 512), 691 t->num_sectors * (diskStructure->sectorSize / 512), 692 0x41 /* PReP Boot */); 693 } 694 } 695 696 if (apm_partitions > 0) { 697 /* Write DDR and global APM info */ 698 uint32_t apm32; 699 uint16_t apm16; 700 int total_parts; 701 702 fseek(fd, 0, SEEK_SET); 703 apm16 = htobe16(0x4552); 704 fwrite(&apm16, sizeof(apm16), 1, fd); 705 /* Device block size */ 706 apm16 = htobe16(512); 707 fwrite(&apm16, sizeof(apm16), 1, fd); 708 /* Device block count */ 709 apm32 = htobe32(diskStructure->totalSectors * 710 (diskStructure->sectorSize / 512)); 711 fwrite(&apm32, sizeof(apm32), 1, fd); 712 /* Device type/id */ 713 apm16 = htobe16(1); 714 fwrite(&apm16, sizeof(apm16), 1, fd); 715 fwrite(&apm16, sizeof(apm16), 1, fd); 716 717 /* Count total needed entries */ 718 total_parts = 2 + apm_partitions; /* Self + ISO9660 */ 719 720 /* Write self-descriptor */ 721 cd9660_write_apm_partition_entry(fd, 0, total_parts, 1, 722 total_parts, 512, "Apple", "Apple_partition_map"); 723 724 /* Write all partition entries */ 725 apm_partitions = 0; 726 TAILQ_FOREACH(t, &diskStructure->boot_images, image_list) { 727 if (t->system != ET_SYS_MAC) 728 continue; 729 730 cd9660_write_apm_partition_entry(fd, 731 1 + apm_partitions++, total_parts, 732 t->sector * (diskStructure->sectorSize / 512), 733 t->num_sectors * (diskStructure->sectorSize / 512), 734 512, "CD Boot", "Apple_Bootstrap"); 735 } 736 737 /* Write ISO9660 descriptor, enclosing the whole disk */ 738 cd9660_write_apm_partition_entry(fd, 2 + apm_partitions, 739 total_parts, 0, diskStructure->totalSectors * 740 (diskStructure->sectorSize / 512), 512, "ISO9660", 741 "CD_ROM_Mode_1"); 742 } 743 744 return 0; 745 } 746